CA2557447A1 - Apparatus for forming an asymmetric illumination beam pattern - Google Patents

Apparatus for forming an asymmetric illumination beam pattern Download PDF

Info

Publication number
CA2557447A1
CA2557447A1 CA002557447A CA2557447A CA2557447A1 CA 2557447 A1 CA2557447 A1 CA 2557447A1 CA 002557447 A CA002557447 A CA 002557447A CA 2557447 A CA2557447 A CA 2557447A CA 2557447 A1 CA2557447 A1 CA 2557447A1
Authority
CA
Canada
Prior art keywords
optical element
forming
beam pattern
pattern according
illumination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002557447A
Other languages
French (fr)
Other versions
CA2557447C (en
Inventor
Peter Kan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Signify Holding BV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2557447A1 publication Critical patent/CA2557447A1/en
Application granted granted Critical
Publication of CA2557447C publication Critical patent/CA2557447C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/313—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being gas discharge devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

The present invention provides an apparatus for forming an asymmetric illumination beam pattern that can be advantageous when illuminating channel letters in addition to enabling the creation of cove lighting, as well as other applications benefiting from asymmetric illumination patterns. The apparatus comprises one or more light-emitting elements for creating the illumination. A first optical element is operatively associated with each of the light-emitting elements and provides a means for manipulating the illumination in a first direction. A second optical element is operatively associated with predetermined light-emitting elements and provides a means for manipulating the illumination in a second direction. Upon the interaction of the illumination with both the first and second optical elements, the illumination being created can have an asymmetric beam pattern.

Claims (18)

1. An apparatus for forming an asymmetric beam pattern for illumination generated by one or more light-emitting elements, said apparatus comprising:
a) a first optical element optically connected with each of the one or more light-emitting elements, said first optical element manipulating the illumination in a first direction;
b) a second optical element optically connected with one or more predetermined light-emitting elements selected from the one or more light-emitting elements, said second optical element for manipulating the illumination created by the one or more predetermined light-emitting elements in a second direction;
thereby forming an asymmetric illumination beam pattern.
2. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said illumination has a beam spread and said first optical element reduces the beam spread in the first direction and said second optical element increases beam spread in said second direction.
3. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said illumination has a beam spread and said first optical element increases the beam spread in the first direction and said second optical element decreases beam spread in said second direction.
4. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first direction is perpendicular to said second direction.
5. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element manipulates the illumination prior to the second optical element.
6. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element manipulates the illumination subsequent to the second optical element.
7. The apparatus for forming an asymmetric beam pattern according to claim 2, wherein said first optical element has a cross sectional size larger than that of one of the light-emitting elements.
8. The apparatus for forming an asymmetric beam pattern according to claim 2, wherein said second optical element has a cross sectional size substantially similar to that of one of light-emitting elements.
9. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element is one or more optics selected from the group comprising lenticular lens, reflector, parabolic reflector, Fresnel lens and a pillow lens.
10. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said second optical element is one or more optics selected from the group comprising lenticular lens, toroidal shaped lens, TIR light guide, reflector, parabolic reflector and a Fresnel lens.
11. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said second optical element is a Fresnel lens having a surface, said surface comprising a series of concentric grooves.
12. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said second optical element is a Fresnel lens having a surface defined by quadrants, each quadrant of said surface comprising a series of arc shaped grooves.
13. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said beam pattern is rectangular or square.
14. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said second optical element is formed comprising multiple Fresnel lenses, each Fresnel lens configured to refract the illumination to different levels.
15. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element and second optical element are formed as an integrated unit.
16. The apparatus for forming an asymmetric beam pattern according to claim 1, further comprising a diffusive optic for manipulating the illumination subsequent to both the first optical element and said second optical element, said diffusive optic selected from the group comprising frosted glass, etched glass, plastic diffuser and holographically-mastered diffusion film.
17. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element is a parabolic reflector, said parabolic reflector comprising two or more surfaces having different tilt angles.
18. The apparatus for forming an asymmetric beam pattern according to claim 1, wherein said first optical element and said second optical element are rotated as a single unit relative to the one or more light-emitting elements.
CA2557447A 2004-02-26 2005-02-28 Apparatus for forming an asymmetric illumination beam pattern Active CA2557447C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US54743704P 2004-02-26 2004-02-26
US60/547,437 2004-02-26
US55739404P 2004-03-30 2004-03-30
US60/557,394 2004-03-30
PCT/CA2005/000303 WO2005083318A1 (en) 2004-02-26 2005-02-28 Apparatus for forming an asymmetric illumination beam pattern

Publications (2)

Publication Number Publication Date
CA2557447A1 true CA2557447A1 (en) 2005-09-09
CA2557447C CA2557447C (en) 2012-12-18

Family

ID=34915601

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2557447A Active CA2557447C (en) 2004-02-26 2005-02-28 Apparatus for forming an asymmetric illumination beam pattern

Country Status (4)

Country Link
US (1) US7652300B2 (en)
EP (1) EP1718899A4 (en)
CA (1) CA2557447C (en)
WO (1) WO2005083318A1 (en)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012167001A1 (en) * 2011-06-02 2012-12-06 Research Triangle Institute Improved reflective nanofiber lighting devices
WO2006122392A1 (en) * 2005-05-20 2006-11-23 Tir Systems Ltd. Cove illumination module and system
RU2406924C2 (en) * 2006-03-23 2010-12-20 Конинклейке Филипс Электроникс Н.В. Lighting device with organic light diodes
WO2007144805A1 (en) * 2006-06-16 2007-12-21 Koninklijke Philips Electronics N.V. Light collimation and mixing of remote light sources
KR101329413B1 (en) * 2006-12-19 2013-11-14 엘지디스플레이 주식회사 Optical lens, optical module having the optical lens and backlight unit having the optical module
WO2008081376A2 (en) * 2007-01-03 2008-07-10 Philips Intellectual Property & Standards Gmbh Lighting device with a plurality of oled units
CN101802681B (en) 2007-08-01 2012-02-22 皇家飞利浦电子股份有限公司 Collimating module and device for zero overfill illumination applications with beam width control
ITBS20080009A1 (en) * 2008-01-22 2009-07-23 Simlux S P A LAMP
ITBS20080008A1 (en) * 2008-01-22 2009-07-23 Simlux S P A LAMP
DE102008019084B4 (en) * 2008-04-15 2020-01-09 Schott Ag Linear lighting device
DE102008019944A1 (en) * 2008-04-21 2009-10-29 Christian Bartenbach Tunnelleuchte and tunnel lighting system with a variety of such tunnel lights
US8348475B2 (en) * 2008-05-23 2013-01-08 Ruud Lighting, Inc. Lens with controlled backlight management
US8388193B2 (en) * 2008-05-23 2013-03-05 Ruud Lighting, Inc. Lens with TIR for off-axial light distribution
US9423096B2 (en) 2008-05-23 2016-08-23 Cree, Inc. LED lighting apparatus
WO2010010494A1 (en) * 2008-07-24 2010-01-28 Koninklijke Philips Electronics N.V. Luminaire device with several lighting units
TW201040447A (en) * 2009-03-13 2010-11-16 Koninkl Philips Electronics Nv Pattern-projecting light-output system
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
WO2010146494A1 (en) * 2009-06-16 2010-12-23 Koninklijke Philips Electronics N.V. Lighting device.
IT1396746B1 (en) * 2009-12-03 2012-12-14 Power Sav Ing Srl LED LIGHTING DEVICE
US8740403B2 (en) 2010-02-22 2014-06-03 Lumenpulse Lighting, Inc. Linear light emitting diode (LED) lighting fixture
US8939607B2 (en) 2010-03-02 2015-01-27 Koninklijke Philips N.V. Optical device, lighting device and system for intercanopy lighting
DE102010014520A1 (en) * 2010-04-09 2011-10-13 Christian Bartenbach lamp
CZ306888B6 (en) * 2010-08-06 2017-08-30 Varroc Lighting Systems, s.r.o. A light-guide module
DE102010060218A1 (en) * 2010-10-28 2014-01-16 Hella Kgaa Hueck & Co. Illumination arrangement for illuminating a worktop
GB2493721A (en) * 2011-08-15 2013-02-20 Raytec Ltd Illumination beam adjustment apparatus
DE102011082844A1 (en) * 2011-09-16 2013-03-21 Zumtobel Lighting Gmbh Lighting arrangement, in particular for escape route lighting
US10408429B2 (en) 2012-02-29 2019-09-10 Ideal Industries Lighting Llc Lens for preferential-side distribution
US9541257B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for primarily-elongate light distribution
US9541258B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for wide lateral-angle distribution
USD697664S1 (en) 2012-05-07 2014-01-14 Cree, Inc. LED lens
US9565782B2 (en) 2013-02-15 2017-02-07 Ecosense Lighting Inc. Field replaceable power supply cartridge
USD718490S1 (en) 2013-03-15 2014-11-25 Cree, Inc. LED lens
US9677738B2 (en) 2013-03-15 2017-06-13 1947796 Ontario Inc. Optical device and system for solid-state lighting
US9523479B2 (en) 2014-01-03 2016-12-20 Cree, Inc. LED lens
JP6402906B2 (en) * 2014-09-17 2018-10-10 カシオ計算機株式会社 Light source device and projection device
US10477636B1 (en) 2014-10-28 2019-11-12 Ecosense Lighting Inc. Lighting systems having multiple light sources
US11306897B2 (en) 2015-02-09 2022-04-19 Ecosense Lighting Inc. Lighting systems generating partially-collimated light emissions
US9869450B2 (en) 2015-02-09 2018-01-16 Ecosense Lighting Inc. Lighting systems having a truncated parabolic- or hyperbolic-conical light reflector, or a total internal reflection lens; and having another light reflector
US9651216B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Lighting systems including asymmetric lens modules for selectable light distribution
US9746159B1 (en) 2015-03-03 2017-08-29 Ecosense Lighting Inc. Lighting system having a sealing system
US9651227B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Low-profile lighting system having pivotable lighting enclosure
US9568665B2 (en) 2015-03-03 2017-02-14 Ecosense Lighting Inc. Lighting systems including lens modules for selectable light distribution
USD785218S1 (en) 2015-07-06 2017-04-25 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782093S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782094S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
US9651232B1 (en) 2015-08-03 2017-05-16 Ecosense Lighting Inc. Lighting system having a mounting device
WO2018200685A2 (en) 2017-04-27 2018-11-01 Ecosense Lighting Inc. Methods and systems for an automated design, fulfillment, deployment and operation platform for lighting installations
US10468566B2 (en) 2017-04-10 2019-11-05 Ideal Industries Lighting Llc Hybrid lens for controlled light distribution
DE102018203352A1 (en) * 2018-03-07 2019-09-12 Robert Bosch Gmbh Sending unit and LIDAR device for scanning a scanning area

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158222A (en) * 1977-09-26 1979-06-12 Gulf & Western Industries, Inc. Limited visibility signal device
FR2707223B1 (en) * 1993-07-07 1995-09-29 Valeo Vision Improved signaling light with light-emitting diodes.
US5795057A (en) 1995-04-17 1998-08-18 Dedo Weigert Film Gmbh Asymmetrical lamp
US6076936A (en) 1996-11-25 2000-06-20 George; Ben Tread area and step edge lighting system
ATE229156T1 (en) 1997-08-07 2002-12-15 Decoma Int Inc LIGHT DIRECTING AND DISTRIBUTING THIN MANAGEMENT SYSTEM OF ONE OR MORE LIGHT SOURCES AND METHOD FOR PRODUCING OPTICAL STRUCTURES FOR USE IN SUCH SYSTEM
US5924788A (en) 1997-09-23 1999-07-20 Teledyne Lighting And Display Products Illuminating lens designed by extrinsic differential geometry
RU2137978C1 (en) 1998-03-26 1999-09-20 Открытое акционерное общество "ЛОМО" Lighting fixture with asymmetric distribution of light flux relative to optical axis
CN1145553C (en) 1998-04-30 2004-04-14 美国3M公司 Lighted sign housing with diffusive reflective film
US6116748A (en) 1998-06-17 2000-09-12 Permlight Products, Inc. Aisle lighting system
US6266476B1 (en) * 1998-08-25 2001-07-24 Physical Optics Corporation Optical element having an integral surface diffuser
US6655060B2 (en) 1999-02-01 2003-12-02 Anton Grate Channel letter
US6502956B1 (en) 1999-03-25 2003-01-07 Leotek Electronics Corporation Light emitting diode lamp with individual LED lenses
US6394626B1 (en) 2000-04-11 2002-05-28 Lumileds Lighting, U.S., Llc Flexible light track for signage
JP4116260B2 (en) * 2001-02-23 2008-07-09 株式会社東芝 Semiconductor light emitting device
US6987613B2 (en) * 2001-03-30 2006-01-17 Lumileds Lighting U.S., Llc Forming an optical element on the surface of a light emitting device for improved light extraction
US6558021B2 (en) 2001-08-10 2003-05-06 Leotek Electronics Corporation Light emitting diode modules for illuminated signs
US6860629B2 (en) 2001-08-18 2005-03-01 Michael Velez Solid transparent acrylic letters
US6932495B2 (en) 2001-10-01 2005-08-23 Sloanled, Inc. Channel letter lighting using light emitting diodes
US6566824B2 (en) 2001-10-16 2003-05-20 Teledyne Lighting And Display Products, Inc. Flexible lighting segment
US6837605B2 (en) * 2001-11-28 2005-01-04 Osram Opto Semiconductors Gmbh Led illumination system
US6641284B2 (en) * 2002-02-21 2003-11-04 Whelen Engineering Company, Inc. LED light assembly
DE10222129A1 (en) 2002-05-17 2003-11-27 Hella Kg Hueck & Co Vehicle lamp with a lamp and a hollow or cup-shaped reflector
US6878436B2 (en) 2002-05-23 2005-04-12 Atofina Light emitting diode signs and translucent plastic sheets used therein
KR101015289B1 (en) * 2002-11-05 2011-02-15 파나소닉 주식회사 Light-emitting diode

Also Published As

Publication number Publication date
CA2557447C (en) 2012-12-18
WO2005083318A1 (en) 2005-09-09
US20050205878A1 (en) 2005-09-22
US7652300B2 (en) 2010-01-26
EP1718899A4 (en) 2007-04-04
EP1718899A1 (en) 2006-11-08

Similar Documents

Publication Publication Date Title
CA2557447A1 (en) Apparatus for forming an asymmetric illumination beam pattern
US10422939B2 (en) Waveguide having unidrectional illuminance
US7758227B1 (en) Light fixture with curved light scattering region comprising ellipsoidal domains
US20180031757A1 (en) Dual-sided film with split light spreading structures
US8430548B1 (en) Enhanced light fixture with volumetric light scattering
JP5951626B2 (en) Expandable icicle type light adjustment lens for LED light diffusion
TW200916692A (en) LED-based luminaire with adjustable beam shape
US20120163027A1 (en) Light-emitting device
WO2014172147A2 (en) Lighting assembly
KR20160138984A (en) Asymmetric turning film with multiple light sources
KR20150030246A (en) Efficient spatially modulated illumination system
US10732342B2 (en) Indirect luminaire
CA2903342C (en) Illumination optical system with tunable beam angle
KR20120056016A (en) Illuminating apparatus with reduced glare
KR20150056401A (en) Optical member and lighting device using same
TWM526654U (en) Projection lamp structure with light distribution curve of bat wings
CN101629693B (en) Light distribution board having gratings with multiple focuses
CN105917165B (en) Luminaire with a light diffuser
CN110998176A (en) Light transmissive structure for redistributing light and illumination system comprising the same
CN109416154B (en) Asymmetrical light intensity distribution from a lighting device
JP2018085251A (en) Illuminating device
CN103649629A (en) Lighting device
JP4884980B2 (en) Lighting device
US20220282849A1 (en) Area Optical Cover With Faceted Surface
WO2016003550A2 (en) Waveguide having unidirectional illuminance

Legal Events

Date Code Title Description
EEER Examination request